Improvement in coke-ovens



UNITED STATES PATENT OFFICE.

LEONARD FORBES REcKwIrH AND ARTHUR BEcKwrrmOn Nnw YORK, N. Y.

` IMPROVEMENT IN COKE-OVEN'S.

Specification forming part of Letters Patent No. 105,41 3, dated July 19, 1870.

-To all 'whom it may concern: l

Be it known that we, LEONARD FORBES Bncxwrrn and ARTHUR BncKwITH, both of the city, county, and State of NewYork,have invented a new and useful Improvement in Coke-Ovens, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification, and in which-- Figure 1 represents a vertical longitudinal section of a coke-oven, taken through its side wall, mainly as indicated by the line was in Fig. 3, which is a transverse section through the line'y y in Fig-1. Fig. 2 is a central longitudinal section through the aching-chamber of the oven.

' Similar letters of reference indicate corresponding parts.

Our invention consists in a novel arrangement of vertical and horizontal iiues, cham` ous kinds of coal, either separately or mixed,.

with or without a cementin g substancesuch, for instance, as coal-tar or asphalt.

- Referring to the accompanying drawing, A is the chamber which is charged with the coal to be coked. The gases are iirst drawn from above `the coal through one or more dropilues, B, which conduct them 'down through the side wall of the oven until they reach the level of the top of the coal in the oven, or thereabout. At this level the gases are collected ina flue, C, which conducts themrst horizontally, and afterward in a downward direction, and'through -a communication, b, to one end of a chamber, D, situated under the iioor of the oven, and extending nearly the whole length and breadth of thelatter. From this chamber D, at the opposite end of it to that at which they are admitted, said gases pass or are drawnoff, through a communication, c, into a horizontal return-due, E, in the side wall of the oven, below the iue C, and

i which return-due conveys the gases backward and forward the length of the oven to an escape-flue or chimney, F.

The vends of the iiues C and E, where they reach the outer Vwalls of the oven, are provided with small openings d, which should have Stoppers for graduating the admission of air and completing the combustion, and which serve as apertures for cleaning the flues.

The following advantages, among others, are obtained for this arrangement of vertical and horizontal ues, chambers, and commu nications. The gases are conducted in a di rect manner from the top of the oven to the chamber D, under the iioor of the oven, where the greatest heat is required, thereby avoiding useless or destructive expenditure of heat o n the sidewalls. A The chamber D, also, by its large capacity relatively to the flues, insures a slow movement of the gases under the iloor of the oven, thereby giving ample time for the transmission of heat to the cokingchamber and diminishing friction,which eases the draft, nor do the iues in the side walls present sufficient changes from a direct line or course to interfere with such ease of the draft.

Furthermore, the amount of flue-space in the side walls above the top level of the coal in the oven, where the heat from the gases has no eifect upon the coke, and only operates to injure the ilues, is reduced to a minimum.

The iioor of the cokingchamber A we prefer to build of slabs of iireproof material, and of the form shown in the drawing, as such fa cilitate the transmission of heat to the coking chamber and present few joints, and by arranging them as shown they arev kept in form and sustained by the weight of the side walls. The flues in the side walls are formed-of :[ire

bricks Gr, having tongues c e on their edges,

2. The tongued fire-bricks, constructed and applied substantially as herein described, to

form the ues and brace the Walls ofthe ovens.

LEONARD F. BECKVVITH. ARTHUR BECKWITH.

Witnesses FRED. HAYNEs, HENRY T. BROWN. 

